Question

a. (3 - 8) + [5 - ( - 2 ) ]=
b. 5 - [63 - 2 - (12 - 8) - 3 + 6]=
c. 18 : [12 : (-2)]=

Answer 1

Respuesta:

$(3 - 8) + (5 - ( - 2)) = ( - 5) + (5 + 2) \\ - 5 + 7 = 2$

$5 - (63 - 2 - (12 - 8) - 3 + 6) \\ 5 - (69 - 5 - (4)) \\ 5 - (69 - 9) \\ 5 - 60 = - 55$

$18 \div (12 \div ( - 2)) = 18 \div ( - 6) \\ \frac{18}{ - 6} = - 3$